The astral plane is one of those ideas that sounds like it was invented by someone selling incense at a Renaissance faire, but it is actually older than Christianity, weirder than you think, and stubbornly resistant to dying. Here is the short version of a very long story.
The Basic Claim
The astral plane is supposedly a non-physical realm of existence that overlaps with the material world but operates on different rules. Depending on who you ask, it is the domain of dreams, spirits, the afterlife, divine beings, or your consciousness when it leaves your body during sleep or meditation. The practice of deliberately visiting it is called astral projectionThe practice of deliberately inducing an out-of-body experience, in which consciousness is believed to travel to a non-physical realm called the astral plane..
The concept did not arrive fully formed. It was assembled over roughly three millennia by Greek philosophers, Neoplatonist mystics, Renaissance alchemists, a French occultist with a flair for drama, a Russian aristocrat who may or may not have met Tibetan monks, and eventually the CIA. Each generation added a layer, and the result is a cosmological layer cake that tastes different depending on which tradition baked it.
Where the Astral Plane Came From
The oldest roots sit in ancient Greek philosophy. Plato argued that the soul existed independently of the body and could access higher realities through reason. He did not call this the astral plane, but the architecture is recognizable: a non-physical dimension accessible to consciousness, more real than the material world, organized hierarchically. Aristotle added the concept of aether, a fifth element composing the celestial spheres, distinct from the four terrestrial elements.
The term “astral” itself derives from the Latin astralis, meaning “of the stars.” The connection is literal: early cosmologies placed these planes in the region of the stars, between Earth and the divine.
Around the fifth century CE, the Neoplatonist philosopher Proclus formalized the idea of an astral body: a subtle vehicle (okhema in Greek) that carried the soul between the physical and divine realms. Proclus described two such vehicles: a luminous, immortal one for the rational soul, and a pneumatic (breath-based), mortal one for the irrational soul. This is the first clear articulation of what later traditions would call the astral body.
In the nineteenth century, the French occultist Eliphas Levi synthesized these older ideas into his concept of the “astral light” in Dogme et Rituel de la Haute Magie (1854-1856). Levi described a universal medium that transmitted thought, will, and magical influence. He did not invent the idea, but he gave it a name and a system that subsequent occultists could build on.
Then came Helena Blavatsky. In 1875, in a Manhattan drawing room, Blavatsky co-founded the Theosophical Society and proceeded to construct a cosmology of seven planes of existence, drawing on Hinduism, Buddhism, NeoplatonismA school of ancient philosophy that expanded Plato's ideas, describing reality as a hierarchy of emanations from a single divine source; it shaped medieval and esoteric thought., and her own considerable imagination. The astral plane was the second, sitting just above the physical. Her successors Annie Besant and C.W. Leadbeater mapped it in exhaustive detail, describing its inhabitants, landscapes, and rules with the confidence of people providing directions to a place they had personally visited.
What Neuroscience Actually Found
The experiences people report during supposed astral projection are real. The explanation is not what proponents want to hear.
In 2002, the Swiss neuroscientist Olaf Blanke electrically stimulated a patient’s right temporoparietal junctionA brain region where the temporal and parietal lobes meet, responsible for integrating body-position signals; disruption here can produce out-of-body experiences. (the brain region that integrates your sense of where your body is in space) and induced a classic out-of-body experience. The patient reported floating above herself, watching her body from the outside. Blanke’s subsequent research established that OBEs are associated with disrupted self-processing at the temporoparietal junction.
In 2014, researchers Andra Smith and Claude Messier at the University of Ottawa published an fMRI study of a woman who could voluntarily induce out-of-body experiences at will. She had been doing it since preschool. Brain scans showed activation of the left supplementary motor area and the temporal-parietal junction, consistent with a specific type of kinesthetic imagery rather than actual soul departure. Her experience was predominantly about feeling her body move, not seeing it from outside.
Surveys suggest that somewhere between 8 and 20 percent of people report having had something resembling an out-of-body experience at some point in their lives. The triggers include sleep deprivation, sensory deprivation, epilepsy, near-death experiences, certain drugs (ketamine, DMT, phencyclidine), and extreme stress. The brain, when deprived of normal sensory input or pushed into abnormal states, can generate a convincing simulation of leaving the body. The experience is genuine. The departure is not.
The CIA Got Involved (Of Course)
In 1983, U.S. Army Lieutenant Colonel Wayne McDonnell wrote a 29-page classified report for the CIA titled “Analysis and Assessment of the Gateway Process.” The Gateway Process was a consciousness-alteration technique developed by Robert Monroe at the Monroe Institute in Virginia, using binaural beatsAn auditory illusion created by playing slightly different sound frequencies in each ear; the brain perceives a pulsing tone at the difference between the two, which can alter brainwave states. to synchronize brainwave patterns between hemispheres. The report attempted to provide a scientific framework for how the technique might enable out-of-body experiences.
The document was declassified in 2003, went viral on TikTok in 2021, and has been cited ever since as evidence that the CIA “confirmed” astral projection. It did not. The report is a speculative assessment by one officer, not an endorsement. It contains no experimental data confirming that consciousness can actually leave the body. But it is a real document, it is genuinely strange, and it does reflect the Cold War era’s willingness to investigate anything that might provide a strategic edge, including the paranormal.
Where It Lives Now
The astral plane never left popular culture. Dungeons & Dragons adopted it in the 1970s as a dimension where players could encounter psychic entities and travel between worlds. Marvel’s Doctor Strange has been astral projecting since 1963. The concept appears in video games, anime, New Age wellness culture, and the Reddit communities where people share techniques for inducing out-of-body experiences.
The persistence is not surprising. The astral plane answers a question that humans have been asking for as long as they have been conscious: is there more to existence than what the body can perceive? Every culture has produced some version of the answer, and the astral plane is the Western esoteric tradition’s most detailed attempt. That the answer appears to be “your brain is generating a very convincing hallucination” has not reduced the appeal. If anything, the neuroscience makes it more interesting: your brain can simulate leaving your body so convincingly that people across three millennia built religions around the experience.
The astral plane is one of Western esotericismA scholarly term for spiritual and occult traditions — such as alchemy, astrology, and mysticism — that claim access to hidden knowledge outside mainstream religion or science.’s most durable ideas, and also one of its most misunderstood. It has been described as a dimension of spirits, a layer of reality accessible through meditation, a frequency of consciousness, and a place where your soul goes when you sleep. None of these descriptions are quite right, and none are entirely wrong, because the concept has been rebuilt so many times across three thousand years that it carries the fingerprints of every tradition that touched it.
The Platonic Foundation
The intellectual ancestry begins with Plato, though Plato himself would not have recognized the term. In the Phaedo, Phaedrus, and Republic, Plato argued for the independent existence of the soul (psyche), its capacity to access higher realities through dialectic, and the existence of a realm of Forms more real than the material world. The cosmology in the Timaeus added the concept of a world-soul (psyche tou kosmou) animating the universe, with the celestial spheres composed of a purer substance than terrestrial matter.
Aristotle formalized this distinction by positing aether (aither) as the fifth element, the quintessence composing the stars and celestial bodies. The term “astral” derives from the Latin astralis (“of the stars”), and the connection between the stellar and the spiritual was literal in ancient cosmology: the region between Earth and the fixed stars was where souls traveled.
The Neoplatonic Vehicle of the Soul
The concept crystallized in late antiquity through the Neoplatonists. Plotinus (third century CE) described a hierarchy of emanation from the One through Nous (intellect) to Psyche (soul) to the material world. But the critical development came from Proclus (412-485 CE), the last major Neoplatonist, who introduced the concept of subtle bodies serving as vehicles (okhemata) for the soul’s descent into matter and ascent back to the divine.
Proclus described two such vehicles. The augoeides okhema (“luminous vehicle”) was an immortal, star-composed body that the soul received during its celestial descent. This was the vehicle of the rational soul, imperishable, made of the same substance as the celestial spheres. The pneumatikon okhema (“pneumatic vehicle”) was mortal, composed of vital breath (pneuma), and served the irrational soul. This two-vehicle model is the earliest systematic description of what later traditions would call the astral body.
The distinction matters because it established a framework that persisted for over a millennium: consciousness was not directly housed in flesh. It inhabited a series of increasingly subtle containers, each corresponding to a different level of reality. Strip away the metaphysics, and you have an early theory of mindThe cognitive ability to understand that other people have beliefs, desires, intentions, and knowledge that differ from your own — the mental capacity that underlies empathy, social prediction, and reading a room.-body dualism with extra steps.
The Renaissance Synthesis
The concept survived the collapse of the Roman philosophical schools through Islamic and Christian transmission. Paracelsus (1493-1541) wrote of a “sidereal body” (corpus sidereum) composed of astral substance, which could separate from the physical body during sleep. Renaissance Hermeticists, Rosicrucians, and alchemists continued to develop variations, but the next major restatement came from Eliphas Levi.
Levi (born Alphonse Louis Constant) was a defrocked French seminarian who became the most influential occultist of the nineteenth century. In Dogme et Rituel de la Haute Magie (1854-1856), he introduced the concept of the “astral light” (lumiere astrale): a universal medium permeating all space, serving as the vehicle for thought, will, and magical influence. Levi synthesized Neoplatonic emanation theory, Kabbalistic concepts of divine light, mesmerism’s “animal magnetism,” and contemporary theories of electromagnetism into a single framework. He did not invent any of these ideas individually, but the synthesis was original and enormously influential.
The astral light, for Levi, was not merely a passive medium. It was the substance of imagination, the record of all events (prefiguring Blavatsky’s Akashic recordsIn Theosophical and esoteric traditions, a supposed non-physical repository of all events, thoughts, and emotions that have ever occurred, said to be accessible through clairvoyance or astral travel.), and the mechanism through which ritual magic operated. Three components drove his magical theory: the astral light, the will, and the imagination. All three had precedents in earlier traditions, but Levi systematized them into something approaching a coherent theory of occult practice.
Blavatsky and the Theosophical Map
Helena Petrovna Blavatsky (1831-1891) took Levi’s framework and expanded it into a full cosmology. The Theosophical Society, which she co-founded in New York in 1875, taught a system of seven planes of existence, each subdivided into seven sub-planes. The astral plane was the second, immediately above the physical, composed of subtler matter invisible to ordinary senses.
Blavatsky claimed her knowledge came from “Mahatmas,” ascended masters in Tibet who could project their consciousness anywhere in the world through astral travel. Whether she genuinely believed this or was constructing a mythology to lend authority to her synthesis of Eastern and Western philosophy is a question that scholars have debated for over a century. What is not debatable is the influence: Theosophy’s seven-plane model became the default framework for Western esoteric cosmology and remains so today.
Her successors Annie Besant and C.W. Leadbeater elaborated the astral plane in extraordinary detail. Leadbeater’s The Astral Plane: Its Scenery, Inhabitants, and Phenomena (1895) describes the plane’s geography, its resident entities (from nature spirits to “shells” of the dead), and the rules governing astral travel. The confidence with which these descriptions are presented is remarkable, given that the sole evidence was Leadbeater’s own claimed clairvoyant observation.
The Neuroscience of Leaving Your Body
Modern neuroscience has not found an astral plane. It has, however, found the mechanism that makes people believe they have visited one.
The landmark study was published in 2002 by Olaf Blanke and colleagues at the University Hospital of Geneva. While performing pre-surgical brain mapping on an epilepsy patient, they electrically stimulated the angular gyrus at the right temporoparietal junctionA brain region where the temporal and parietal lobes meet, responsible for integrating body-position signals; disruption here can produce out-of-body experiences. (TPJ). The patient immediately reported an out-of-body experience: she saw herself lying on the bed from above. Repeated stimulation consistently reproduced the experience. The findings, published in Nature, demonstrated for the first time that OBEs could be artificially and reliably induced by disrupting a specific brain region responsible for integrating multisensory body-ownership signals.
Blanke’s subsequent research program established that the TPJ is critical for self-location (knowing where “you” are in space) and first-person perspective. When normal integration of visual, vestibular, and proprioceptive signals breaks down at the TPJ, the brain generates an experience of dislocation: you feel yourself to be somewhere your body is not. The experience is not imagined. It is a genuine perceptual event, produced by the brain’s own spatial-processing machinery operating outside normal parameters.
In 2014, Andra Smith and Claude Messier at the University of Ottawa published an fMRI study of a 24-year-old woman who could voluntarily induce what she described as extra-corporeal experiences at will. She had discovered the ability during mandatory preschool nap time (which is, admittedly, one of the more charming origin stories in the neuroscience literature). Brain imaging during her self-induced OBEs showed activation primarily in left-hemisphere regions: the supplementary motor area, the supramarginal gyrus, and the posterior superior temporal gyrus, the last two overlapping with the TPJ. Cerebellar activation was consistent with her reported sensation of movement. Smith and Messier concluded that the phenomenon represented “an unusual type of kinesthetic imagery” distinct from standard motor imagery.
The broader epidemiology is consistent with a neurological rather than metaphysical explanation. OBEs are triggered by conditions that disrupt normal brain function: temporal lobe epilepsy, sleep paralysisA state in which consciousness returns before the motor paralysis of REM sleep (REM atonia) releases, leaving the person awake but unable to move., extreme fatigue, sensory deprivation, near-death physiological states, and psychoactive substances including ketamine, DMT, and phencyclidine. Between 8 and 20 percent of the general population reports having had at least one OBE. The variation in prevalence estimates reflects differences in how strictly “out-of-body experience” is defined, but even the conservative end represents a substantial minority of humans whose brains have, at some point, generated a convincing simulation of leaving the body.
The CIA’s Gateway Report
No history of the astral plane in the twentieth century is complete without the Gateway Process, because no other document has done more to sustain popular belief that the U.S. government “secretly confirmed” astral projectionThe practice of deliberately inducing an out-of-body experience, in which consciousness is believed to travel to a non-physical realm called the astral plane.. It did not, but the actual story is interesting enough without the embellishment.
In 1983, U.S. Army Lieutenant Colonel Wayne M. McDonnell was tasked by the Commander of the U.S. Army Operational Group with evaluating the Gateway Experience, a consciousness-alteration technique developed by Robert Monroe at the Monroe Institute in Faber, Virginia. Monroe, a radio broadcasting executive, had begun experiencing spontaneous out-of-body episodes in 1958 and spent decades developing audio techniques (later branded “Hemi-Sync”) that used binaural beatsAn auditory illusion created by playing slightly different sound frequencies in each ear; the brain perceives a pulsing tone at the difference between the two, which can alter brainwave states. to synchronize brainwave activity between the left and right hemispheres.
McDonnell’s 29-page report, “Analysis and Assessment of the Gateway Process,” attempted to provide a theoretical framework for how the technique might work, drawing on quantum physics, holographic universe theory, and neurophysiology. The report was classified, declassified in 2003, went viral on TikTok in 2021, and has since been cited approximately ten million times by people who read the headline but not the document.
What the report actually says: McDonnell concluded that the Gateway technique appeared to produce altered states of consciousness that the participants experienced as genuine. What the report does not say: that consciousness actually left the body, that the astral plane exists as an objective reality, or that any of this was experimentally verified. The report is a speculative assessment, not a research finding. It contains no controlled experiments, no peer review, and no replication. It is a product of the same Cold War institutional mindset that also investigated remote viewing and psychic espionage under Project Stargate, most of which produced null or inconclusive results.
That said, the fact that the U.S. military spent money investigating this is not as absurd as it sounds in retrospect. During the Cold War, both superpowers were terrified of the other gaining any edge, however unlikely. The Soviets were reportedly investigating psychic phenomena. The American military’s logic was straightforward: if there is even a small chance this works, we cannot afford to be the ones who did not look into it. The same logic produced MKUltra. The bar for “worth investigating” was remarkably low when the alternative was the possibility of Soviet psychic spies.
Pop Culture and Persistence
The astral plane entered mainstream popular culture through multiple channels. Dungeons & Dragons, first published in 1974, incorporated the astral plane as a traversable dimension where players could encounter psychic entities, dead gods, and the silver cords connecting astral travelers to their physical bodies (the silver cord is a Theosophical concept, borrowed wholesale). Marvel Comics had Doctor Strange astral projecting since his debut in 1963. The concept saturates video games, anime, horror fiction, and the wellness industry.
The persistence of the idea is not accidental. The astral plane sits at the intersection of several deep human needs: the desire for consciousness to survive bodily death, the intuition that subjective experience is somehow separate from physical matter, and the universal fascination with altered states of awareness. Every major culture has produced some version of a non-physical realm accessible to consciousness: the Zoroastrian concept of the menog (spiritual) world, the Buddhist formless realms, the Aboriginal Australian Dreamtime, the shamanic spirit worlds across indigenous traditions worldwide.
What the Western esoteric tradition added was systemization. Where shamanic traditions described the spirit world through narrative and ritual, the Neoplatonists, Theosophists, and their successors mapped it with the confidence of cartographers. They numbered the planes, described their inhabitants, and wrote instruction manuals for visiting them. The impulse is recognizably scientific even when the content is not: the desire to categorize, systematize, and make reproducible.
The Astral Plane: An Honest Assessment
There is no scientific evidence that the astral plane exists as an objective reality external to the brain. There is substantial evidence that the brain can generate experiences that feel exactly like leaving the body, and that these experiences are associated with specific, identifiable neural mechanisms. The temporoparietal junction, when disrupted, produces dislocation experiences. Certain substances reliably produce them. Sleep states can produce them. The phenomenology is real; the ontology is not (or at least, is not supported by any current evidence).
But dismissing the concept as “just hallucination” misses something important. The fact that the human brain has a built-in capacity to simulate out-of-body experiences is, on its own, extraordinary. The fact that this capacity is common enough to have independently generated similar cosmologies across cultures separated by thousands of years and thousands of miles is a genuine puzzle worth taking seriously. The astral plane may not exist, but the neural architecture that makes people believe it does is one of the more interesting features of the human brain.
Three thousand years after Plato described the soul’s capacity to access higher realities, and a century after Blavatsky mapped seven planes of existence in a Manhattan drawing room, the astral plane endures. Not because the evidence supports it, but because the experience that inspired it is wired into the hardware.
